US6805061B2 - Two-piece pallet - Google Patents
Two-piece pallet Download PDFInfo
- Publication number
- US6805061B2 US6805061B2 US10/054,236 US5423602A US6805061B2 US 6805061 B2 US6805061 B2 US 6805061B2 US 5423602 A US5423602 A US 5423602A US 6805061 B2 US6805061 B2 US 6805061B2
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- United States
- Prior art keywords
- deck
- projections
- decks
- recesses
- latch members
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D19/00—Pallets or like platforms, with or without side walls, for supporting loads to be lifted or lowered
- B65D19/0004—Rigid pallets without side walls
- B65D19/0006—Rigid pallets without side walls the load supporting surface being made of a single element
- B65D19/0008—Rigid pallets without side walls the load supporting surface being made of a single element forming a continuous plane contact surface
- B65D19/001—Rigid pallets without side walls the load supporting surface being made of a single element forming a continuous plane contact surface the base surface being made of a single element
- B65D19/0012—Rigid pallets without side walls the load supporting surface being made of a single element forming a continuous plane contact surface the base surface being made of a single element forming a continuous plane contact surface
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D2519/00—Pallets or like platforms, with or without side walls, for supporting loads to be lifted or lowered
- B65D2519/00004—Details relating to pallets
- B65D2519/00009—Materials
- B65D2519/00014—Materials for the load supporting surface
- B65D2519/00034—Plastic
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D2519/00—Pallets or like platforms, with or without side walls, for supporting loads to be lifted or lowered
- B65D2519/00004—Details relating to pallets
- B65D2519/00009—Materials
- B65D2519/00049—Materials for the base surface
- B65D2519/00069—Plastic
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D2519/00—Pallets or like platforms, with or without side walls, for supporting loads to be lifted or lowered
- B65D2519/00004—Details relating to pallets
- B65D2519/00258—Overall construction
- B65D2519/00263—Overall construction of the pallet
- B65D2519/00273—Overall construction of the pallet made of more than one piece
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D2519/00—Pallets or like platforms, with or without side walls, for supporting loads to be lifted or lowered
- B65D2519/00004—Details relating to pallets
- B65D2519/00258—Overall construction
- B65D2519/00263—Overall construction of the pallet
- B65D2519/00278—Overall construction of the pallet the load supporting surface and the base surface being identical
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D2519/00—Pallets or like platforms, with or without side walls, for supporting loads to be lifted or lowered
- B65D2519/00004—Details relating to pallets
- B65D2519/00258—Overall construction
- B65D2519/00283—Overall construction of the load supporting surface
- B65D2519/00288—Overall construction of the load supporting surface made of one piece
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D2519/00—Pallets or like platforms, with or without side walls, for supporting loads to be lifted or lowered
- B65D2519/00004—Details relating to pallets
- B65D2519/00258—Overall construction
- B65D2519/00283—Overall construction of the load supporting surface
- B65D2519/00308—Overall construction of the load supporting surface grid type, e.g. perforated plate
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D2519/00—Pallets or like platforms, with or without side walls, for supporting loads to be lifted or lowered
- B65D2519/00004—Details relating to pallets
- B65D2519/00258—Overall construction
- B65D2519/00313—Overall construction of the base surface
- B65D2519/00318—Overall construction of the base surface made of one piece
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D2519/00—Pallets or like platforms, with or without side walls, for supporting loads to be lifted or lowered
- B65D2519/00004—Details relating to pallets
- B65D2519/00258—Overall construction
- B65D2519/00313—Overall construction of the base surface
- B65D2519/00328—Overall construction of the base surface shape of the contact surface of the base
- B65D2519/00333—Overall construction of the base surface shape of the contact surface of the base contact surface having a stringer-like shape
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D2519/00—Pallets or like platforms, with or without side walls, for supporting loads to be lifted or lowered
- B65D2519/00004—Details relating to pallets
- B65D2519/00258—Overall construction
- B65D2519/00313—Overall construction of the base surface
- B65D2519/00363—Overall construction of the base surface grid type, e.g. perforated plate
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D2519/00—Pallets or like platforms, with or without side walls, for supporting loads to be lifted or lowered
- B65D2519/00004—Details relating to pallets
- B65D2519/00258—Overall construction
- B65D2519/00398—Overall construction reinforcements
- B65D2519/00402—Integral, e.g. ribs
- B65D2519/00407—Integral, e.g. ribs on the load supporting surface
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D2519/00—Pallets or like platforms, with or without side walls, for supporting loads to be lifted or lowered
- B65D2519/00004—Details relating to pallets
- B65D2519/00258—Overall construction
- B65D2519/00398—Overall construction reinforcements
- B65D2519/00402—Integral, e.g. ribs
- B65D2519/00412—Integral, e.g. ribs on the base surface
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D2519/00—Pallets or like platforms, with or without side walls, for supporting loads to be lifted or lowered
- B65D2519/00004—Details relating to pallets
- B65D2519/00547—Connections
- B65D2519/00552—Structures connecting the constitutive elements of the pallet to each other, i.e. load supporting surface, base surface and/or separate spacer
- B65D2519/00557—Structures connecting the constitutive elements of the pallet to each other, i.e. load supporting surface, base surface and/or separate spacer without separate auxiliary elements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D2519/00—Pallets or like platforms, with or without side walls, for supporting loads to be lifted or lowered
- B65D2519/00004—Details relating to pallets
- B65D2519/00547—Connections
- B65D2519/00552—Structures connecting the constitutive elements of the pallet to each other, i.e. load supporting surface, base surface and/or separate spacer
- B65D2519/00557—Structures connecting the constitutive elements of the pallet to each other, i.e. load supporting surface, base surface and/or separate spacer without separate auxiliary elements
- B65D2519/00567—Structures connecting the constitutive elements of the pallet to each other, i.e. load supporting surface, base surface and/or separate spacer without separate auxiliary elements mechanical connection, e.g. snap-fitted
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D2519/00—Pallets or like platforms, with or without side walls, for supporting loads to be lifted or lowered
- B65D2519/00004—Details relating to pallets
- B65D2519/00736—Details
- B65D2519/00776—Accessories for manipulating the pallet
- B65D2519/00796—Guiding means for fork-lift
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S108/00—Horizontally supported planar surfaces
- Y10S108/901—Synthetic plastic industrial platform, e.g. pallet
- Y10S108/902—Made with deformable integral fastening elements
Definitions
- This invention relates to pallets for supporting freight, goods, or other materials.
- Plastic pallets typically have separate upper and lower decks which are secured together in some manner, such as by mechanical latches.
- the separate upper and lower decks each usually have different latching features, requiring the expense of having two separate molds.
- impact to the pallet encountered during handling, such as from a fork lift or the like might possibly cause lateral movement of the upper and lower decks with respect to one another and result in disengagement of the decks.
- pallets may be vulnerable to forces applied along the parting line between the upper and lower decks. Therefore, a need exists for a pallet which is more resistant to impact along the parting line and provides a more secure latching feature to enhance the attachment of the upper and lower decks to counter separation of the decks.
- a pallet having spaced first and second decks and a plurality of opposed mating areas formed in each of the decks.
- Each mating area includes alternating projections and recesses, where the projections of the first deck are arranged to be received by the recesses of the second deck and the projections of the second deck are arranged to be received by the recesses of the first deck.
- Each mating area further includes at least one latch member extending therefrom, where the latch members of one deck are arranged to engage the projections of the other deck such that engagement of the mating areas of the first and second decks securely joins the decks in an assembled configuration.
- engagement of the projections and recesses results in a non-planar parting line between the assembled first and second decks.
- the projections and recesses of each deck are tapered to mate with an interference fit, and also include angled faces which engage to restrain transverse movement of the assembled decks.
- corresponding mating areas of the first and second decks include an alternating arrangement of latch members of the first deck engaged with projections of the second deck and latch members of the second deck engaged with projections of the first deck.
- engagement surfaces defined by the location of engagement of latch members of the first deck and projections of the second deck are not co-planar with engagement surfaces defined by the location of engagement of latch members of the second deck and projections of the first deck.
- Each latch member includes an arm portion which projects outwardly from the mating area, a generally horizontal shoulder portion connected to the arm portion, and a tapered end portion connected to the shoulder portion.
- each projection includes a receiving face arranged to engage the shoulder portion of one latch member.
- the latch members are flexible, such that engagement of the opposed mating areas causes the projections to contact the tapered end portions of each latch member and deflect the latch members outwardly from their resting position. Passage of the receiving face past the tapered portion allows the latch members to return to their rest position such that the shoulder portions of the latch members engage the receiving faces of the projections.
- the pallet is preferably constructed from a plastic material.
- the first and second decks have reversible configurations.
- the upper and lower deck mating areas include corner mating areas disposed in the corner of each deck, medial mating areas disposed at both ends of a longitudinal axis of the pallet, and transverse mating areas disposed along either side of a transverse axis of the pallet.
- Complementary configurations of projections and recesses exist between adjacent corner mating areas, between the medial mating areas, and between adjacent transverse mating areas on opposite sides of the transverse axis within each deck.
- a pallet including a lower deck having a plurality of lower deck mating areas, and an upper deck spaced from and overlying the lower deck, the upper deck having a plurality of upper deck mating areas complementary to the lower deck mating areas.
- Each of the lower deck and upper deck mating areas includes an alternating arrangement of projections and recesses.
- a two-piece plastic pallet which includes spaced upper and lower decks and a plurality of opposed mating areas formed in the upper and lower decks, where each mating area includes alternating projections and recesses and a plurality of latch members extending therefrom.
- the projections and recesses of each deck include angled faces which engage to restrain transverse movement of the assembled decks.
- the latch members of one deck are arranged to engage the projections of the other deck such that when the decks are in an assembled configuration, corresponding mating areas of the upper and lower decks include an alternating arrangement of latch members of the upper deck engaged with projections of the lower deck and latch members of the lower deck engaged with projections of the upper deck.
- FIG. 1 is a top perspective view of an assembled pallet according to the present invention
- FIG. 2 is top plan view of the pallet of FIG. 1;
- FIG. 3 is a bottom plan view of the pallet of FIG. 1, showing a first embodiment of the lower deck;
- FIG. 4 is a front elevational view of the pallet of FIG. 1, the rear elevational view being a mirror image thereof;
- FIG. 5 is a left side elevational view of the pallet of FIG. 1, the right side elevational view being a mirror image thereof;
- FIG. 6 is an enlarged top plan view of a corner portion of the pallet shown in FIG. 1;
- FIG. 7 is an enlarged perspective view of the corner portion shown in FIG. 6;
- FIG. 8 is a cross-sectional view taken along line 8 — 8 of FIG. 6 showing the upper and lower decks in an assembled configuration
- FIG. 9 is a top perspective, exploded view of the pallet of FIG. 1, showing the upper and lower decks aligned for assembly;
- FIG. 10 is a bottom perspective view of the upper deck of the pallet of FIG. 9;
- FIG. 11 is a top perspective view of the lower deck of the pallet of FIG. 9;
- FIG. 12 is a top perspective view of an alternative embodiment of the lower deck
- FIG. 13 is a fragmentary perspective view showing a projection of the upper deck prior to engagement with a recess and latch member of the lower deck;
- FIG. 14 is an enlarged perspective view of a corner portion of the lower deck shown in FIG. 11 .
- Pallet 10 includes two separately molded parts, namely an upper deck 12 and a lower deck 14 .
- Upper deck 12 and lower deck 14 are injection molded of a suitable plastic material, such as polypropylene.
- pallet 10 In plan view (FIGS. 2 - 3 ), pallet 10 is generally rectangular in shape with rounded corners, having a longitudinal axis 16 and a transverse axis 18 .
- the two-piece injection molded plastic construction of pallet 10 affords substantial strength, durability, and ease of assembly.
- upper and lower decks 12 , 14 are adapted to be easily snapped together to form the assembled pallet 10 illustrated in FIGS. 1-5.
- ribs 20 in upper deck 12 form an orthogonal pattern which runs parallel and perpendicular to the sides 22 , 24 , 26 , 28 of pallet 10 .
- Ribs 20 form apertures which reduce the weight of upper deck 12 and allow for drainage in the event that pallet 10 becomes wet.
- a plurality of mating areas 30 , 32 , 34 are integrally formed within the bottom surface 36 of upper deck 12 . More specifically, at each of the four corners of the upper deck 12 , a generally rectangular corner mating area 30 is formed. Along longitudinal axis 16 (see FIG. 2) at the mid-point of the left side 22 and right side 24 of the pallet 10 , generally square medial mating areas 32 are formed. In addition, on either side of transverse axis 18 (see FIG. 2 ), generally rectangular transverse mating areas 34 are formed. Transverse mating areas 34 are located along front side 26 of pallet 10 , rear side 28 of pallet 10 , and centrally intersecting with longitudinal axis 16 . Mating areas 30 , 32 , 34 preferably have smooth, rounded outside surfaces to prevent damage from the forks of a fork lift or pallet jack.
- mating areas 30 which are disposed in opposite corners have similar configurations, whereas mating areas 30 which are adjacent have complementary configurations.
- Mating areas 32 also have complementary configurations, as do mating areas 34 which are disposed on opposite sides of transverse axis 18 .
- Mating areas 30 , 32 , 34 are adapted to engage opposed and complementary mating areas 46 , 48 , 50 which are integrally molded with lower deck 14 as described below.
- Lower deck 14 has a footprint which substantially matches that of upper deck 12 , but differs slightly in structure.
- Lower deck 14 includes a generally rectangular perimeter portion 38 , an integrally formed longitudinal member or rail 40 joined to the perimeter portion 38 at sides 22 , 24 of pallet 10 and extending along longitudinal axis 16 (see FIG. 3 ).
- an integrally formed transverse member or rail 42 is joined to the perimeter portion 38 at sides 26 , 28 of pallet 10 .
- Transverse rail 42 is also joined with the longitudinal rail 40 and extends along the transverse axis 18 (see FIG. 3 ). Together, perimeter portion 38 , longitudinal rail 40 , and transverse rail 42 define four relatively large openings 44 in lower deck 14 .
- lower deck mating areas 46 , 48 , 50 corresponding respectively in number and shape to upper deck mating areas 30 , 32 , 34 are integrally formed with and project upwardly from a top surface 52 of lower deck 14 .
- corner mating areas 46 project from the four corners of perimeter portion 38
- medial mating areas 48 project from each end of longitudinal rail 40
- transverse mating areas 50 project from the ends and midpoint of each transverse rail 42 on each side of transverse axis 18 (see FIG. 3 ).
- the areas between mating areas 30 , 46 and 32 , 48 and 34 , 50 are regions arranged to receive the forks of a fork lift or pallet jacks.
- lower deck 14 has a plurality of reinforcing ribs 54 which provide structural rigidity for the deck 14 and properly distribute the load carried by the upper deck 12 and mating areas 46 , 48 , 50 .
- a second embodiment of lower deck designated generally by reference numeral 114 , is illustrated in the perspective view of FIG. 12 .
- Components of lower deck 114 which are similar to components described previously for upper deck 12 or lower deck 14 have like reference numerals with the addition of a “1” prefix.
- mold inserts which define the openings 44 in lower deck 14 are removed, such that in this embodiment upper deck 12 and lower deck 114 have substantially identical configurations.
- upper and lower decks 12 , 114 are completely reversible and thus can be constructed using the same mold.
- the area between mating areas 146 , 148 , 150 is fully spanned by ribs 154 such that lower deck 114 does not include any large open areas.
- lower deck 14 or lower deck 114 can be mated with upper deck 12 to form an assembled pallet 10 according to the present invention. Accordingly, while the following description refers only to lower deck 14 , it is understood that this description applies equally well to lower deck 114 .
- upper deck mating areas 30 , 32 , 34 and lower deck mating areas 46 , 48 , 50 each include an alternating configuration of projections 56 and recesses 58 .
- reference numerals for projections and recesses located on lower deck 14 are given a prime (′) designation.
- the projections 56 of the upper deck 12 are arranged to be received by the recesses 58 ′ of the lower deck 14
- the projections 56 ′ of the lower deck 14 are arranged to be received by the recesses 58 of the upper deck 12 .
- opposed projections 56 , 56 ′ and recesses 58 , 58 ′ are tapered in the z direction generally perpendicular to the plane of the decks 12 , 14 .
- projections 56 , 56 ′ and recesses 58 , 58 ′ each include faces 57 , 57 ′ disposed in the x-y plane generally parallel to the plane of the decks 12 , 14 , wherein the faces 57 , 57 ′ are correspondingly angled. Due to their angle of taper, opposed projections 56 , 56 ′ and recesses 58 , 58 ′ on decks 12 , 14 at first align easily.
- projections 56 , 56 ′ and recesses 58 , 58 ′ mate with a tight interference fit and create an interlock between the upper and lower decks 12 , 14 which provides resistance against their disengagement. Furthermore, engagement of the opposed angled faces 57 , 57 ′ advantageously restrains transverse movement of the mated projections 56 , 56 ′ and recesses 58 , 58 ′ along the plane of the decks 12 , 14 .
- projections 56 , 56 ′ and recesses 58 , 58 ′ are formed along a periphery of each mating area 30 , 32 , 34 , 46 , 48 , 50 .
- this arrangement results in a non-planar parting line 59 between the upper and lower decks 12 , 14 (see FIGS. 1 and 4 - 5 ).
- projections 56 , 56 ′ and recesses 58 , 58 ′ could also be provided in the interior of each mating area 30 , 32 , 34 , 46 , 48 , 50 to provide further engagement.
- parting line 59 is depicted herein as being somewhat wavy, having a configuration similar to a triangle wave, other non-planar configurations of parting line 59 are fully contemplated according to the present invention.
- the non-planar parting line configuration according to the present invention greatly decreases the susceptibility of separation of upper and lower decks 12 , 14 due to impact forces applied along the parting line, since stress is distributed outside of a single plane.
- the arrangement of projections 56 , 56 ′ and recesses 58 , 58 ′ within different mating areas 30 , 32 , 34 , 46 , 48 , 50 of the upper and lower decks 12 , 14 is designed to allow versatility in assembling upper and lower decks 12 , 14 .
- complementary configurations of projections 56 , 56 ′ and recesses 58 , 58 ′ exist between adjacent corner mating areas 30 , 46 , between medial mating areas 32 , 48 , and between adjacent transverse mating areas 34 , 50 on opposite sides of transverse axis 18 within each deck 12 , 14 .
- each mating area 30 , 32 , 34 , 46 , 48 , 50 there are also a plurality of depending latch members or tabs 60 , details of which are shown in FIGS. 10-11 and 14 and best shown in FIG. 13 .
- Each mating area 30 , 32 , 34 , 46 , 48 , 50 includes a plurality of ribs 62 adjacent to each recess 58 , and each latch member 60 is integrally formed with one of the ribs 62 and projects therefrom.
- Each latch member 60 includes an arm portion 64 which attaches the latch member 60 to the rib 62 .
- the arm portion 64 projects outwardly to form a generally horizontal shoulder portion 66 and terminates in a tapered end portion 68 .
- latch members 60 and their related components which are disposed on lower deck 14 have been given a prime (′) designation in the related description and drawings.
- each corner mating area 30 , 46 includes ten latch members 60 , 60 ′ and each medial mating area 32 , 48 includes twelve latch members 60 , 60 ′.
- Transverse mating areas 34 , 50 disposed along side 28 , 128 and side 26 , 126 each include five latch members 60 , 60 ′, while transverse mating areas 34 , 50 disposed along longitudinal axis 16 each include eight latch members 60 , 60 ′.
- other numbers of latch members 60 , 60 ′ within mating areas 30 , 32 , 34 , 46 , 48 , 50 may be utilized in practicing the present invention.
- FIG. 9 and the enlarged fragmentary view of FIG. 13 depict how the pallet decks 12 , 14 are aligned for assembly.
- the latch members 60 , 60 ′ of one deck 12 , 14 are arranged to engage the projections 56 , 56 ′ of the other deck 12 , 14 such that engagement of the mating areas 30 , 32 , 34 , 46 , 48 , 50 of the upper and lower decks 12 , 14 securely joins the decks in an assembled configuration.
- Latch members 60 , 60 ′ are flexible, such that engagement of opposed mating areas 30 , 32 , 34 , 46 , 48 , 50 on decks 12 , 14 causes the projections 56 , 56 ′ to contact the tapered end portions 68 , 68 ′ of each latch member 60 , 60 ′ and deflect the latch members 60 , 60 ′ outwardly from their resting position.
- corresponding mating areas 30 , 32 , 34 , 46 , 48 , 50 of the assembled upper and lower decks 12 , 14 include an alternating arrangement of latch members 60 of the upper deck 12 engaged with projections 56 ′ of the lower deck 14 and latch members 60 ′ of the lower deck 14 engaged with projections 56 of the upper deck 12 .
- Engagement surfaces defined by the location of engagement of latch members 60 of the upper deck 12 and projections 56 ′ of the lower deck 14 are not co-planar with engagement surfaces defined by the location of engagement of latch members 60 ′ of the lower deck 14 and projections 56 of the upper deck 12 . Since the engagement surfaces do not all lie in the same plane, improved protection is provided against separation of the pallet decks 12 , 14 as a result of lateral impact. Separation of the pallet decks 12 , 14 is further countered by having latch members 60 , 60 ′ projecting from each of the upper and lower decks 12 , 14 since the latch members 60 , 60 ′ provide resistance to separation in either direction.
- each engaged mating area 30 , 32 , 34 of upper deck 12 with corresponding mating areas 46 , 48 , 50 of lower deck 14 is accomplished generally simultaneously. Since each engaged mating area 30 , 32 , 34 , 46 , 48 , 50 includes multiple projections 56 , 56 ′ tightly fit with corresponding recesses 58 , 58 ′ as well as multiple latch members 60 , 60 ′ engaged with corresponding projections 56 , 56 ′, a secure connection between upper and lower decks 12 , 14 is provided. Furthermore, due to the configuration of the projections 56 , 56 ′ and recesses 58 , 58 ′, a non-planar parting line 59 (see FIGS. 1 and 4 - 5 ) is created which greatly reduces the susceptibility of separation of the pallet decks 12 , 14 during use.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Pallets (AREA)
Abstract
Description
Claims (29)
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/054,236 US6805061B2 (en) | 2002-01-22 | 2002-01-22 | Two-piece pallet |
CA002416734A CA2416734A1 (en) | 2002-01-22 | 2003-01-20 | Pallet |
MXPA03000617A MXPA03000617A (en) | 2002-01-22 | 2003-01-21 | Pallet. |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/054,236 US6805061B2 (en) | 2002-01-22 | 2002-01-22 | Two-piece pallet |
Publications (2)
Publication Number | Publication Date |
---|---|
US20030136314A1 US20030136314A1 (en) | 2003-07-24 |
US6805061B2 true US6805061B2 (en) | 2004-10-19 |
Family
ID=21989664
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/054,236 Expired - Lifetime US6805061B2 (en) | 2002-01-22 | 2002-01-22 | Two-piece pallet |
Country Status (3)
Country | Link |
---|---|
US (1) | US6805061B2 (en) |
CA (1) | CA2416734A1 (en) |
MX (1) | MXPA03000617A (en) |
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Cited By (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20110017106A1 (en) * | 2000-04-11 | 2011-01-27 | Muirhead Scott A W | Plastic pallet structure |
US8210107B2 (en) * | 2000-04-11 | 2012-07-03 | Nextreme Llc | Plastic pallet structure |
US20050193927A1 (en) * | 2001-10-16 | 2005-09-08 | Herring Conrad C. | Rackable composite shipping pallet for transporting and storing loads |
US20060254476A1 (en) * | 2005-05-12 | 2006-11-16 | Macdonald Warren M | Collapsible nestable pallet |
US7779765B2 (en) | 2006-03-03 | 2010-08-24 | Daniel Kelly | Pallet with telescoped leg assemblies |
US20070237611A1 (en) * | 2006-04-11 | 2007-10-11 | Grams Merle A | Rack with forklift pocket |
US20080178775A1 (en) * | 2007-01-26 | 2008-07-31 | Strobl Frederick P | Plastic panel, particularly for use as production pallet |
US7793598B2 (en) * | 2007-01-26 | 2010-09-14 | Strobl Jr Frederick P | Plastic panel, particularly for use as production pallet |
US9272810B2 (en) | 2007-08-23 | 2016-03-01 | Rehrig Pacific Company | Pallet |
US20090050029A1 (en) * | 2007-08-23 | 2009-02-26 | Ogburn Sean T | Pallet |
JP2010064774A (en) * | 2008-09-11 | 2010-03-25 | Dic Corp | Synthetic resin pallet |
US8770115B2 (en) | 2012-02-14 | 2014-07-08 | Rehrig Pacific Company | Pallet assembly |
US9701442B1 (en) | 2014-09-30 | 2017-07-11 | The United States Of America As Represented By The Secretary Of The Navy | General use of a strapless pallet |
US10118731B2 (en) | 2015-06-08 | 2018-11-06 | Rehrig Pacific Company | Pallet assembly |
US11104478B2 (en) | 2018-11-13 | 2021-08-31 | Chep Technology Pty Limited | Half-size plastic pallet with grommets in the top deck |
US11104479B2 (en) | 2018-11-13 | 2021-08-31 | Chep Technology Pty Limited | Stackable half-size plastic pallet |
US11111053B2 (en) | 2018-11-13 | 2021-09-07 | Chep Technology Pty Limited | Stackable half-size reconfigurable pallet/dolly platform |
US11167882B2 (en) | 2018-11-13 | 2021-11-09 | Chep Technology Pty Limited | Half-size plastic pallet with deck scoop areas |
US11554895B2 (en) | 2018-11-13 | 2023-01-17 | Chep Technology Pty Limited | Half-size plastic pallet with removable pallet support legs |
USD932729S1 (en) | 2019-07-23 | 2021-10-05 | Signode Industrial Group Llc | Pallet |
US11066210B1 (en) | 2020-09-01 | 2021-07-20 | David Ankele | Nylon pallet |
Also Published As
Publication number | Publication date |
---|---|
MXPA03000617A (en) | 2004-09-03 |
CA2416734A1 (en) | 2003-07-22 |
US20030136314A1 (en) | 2003-07-24 |
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